X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=include%2Flinux%2Fjiffies.h;h=e0b5b684d83f2969816f051acb2e1158da2fe06d;hb=399f486286f44d55c4fff0e9cc5d712f2b443489;hp=c080f61fb024fb053e111a8878d9c7b12788c001;hpb=5fc77247f7db01b6377a5ea6ab18c8ac60021045;p=deliverable%2Flinux.git

diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index c080f61fb024..e0b5b684d83f 100644
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -29,6 +29,12 @@
 # define SHIFT_HZ	9
 #elif HZ >= 768 && HZ < 1536
 # define SHIFT_HZ	10
+#elif HZ >= 1536 && HZ < 3072
+# define SHIFT_HZ	11
+#elif HZ >= 3072 && HZ < 6144
+# define SHIFT_HZ	12
+#elif HZ >= 6144 && HZ < 12288
+# define SHIFT_HZ	13
 #else
 # error You lose.
 #endif
@@ -36,9 +42,7 @@
 /* LATCH is used in the interval timer and ftape setup. */
 #define LATCH  ((CLOCK_TICK_RATE + HZ/2) / HZ)	/* For divider */
 
-#define LATCH_HPET ((HPET_TICK_RATE + HZ/2) / HZ)
-
-/* Suppose we want to devide two numbers NOM and DEN: NOM/DEN, the we can
+/* Suppose we want to devide two numbers NOM and DEN: NOM/DEN, then we can
  * improve accuracy by shifting LSH bits, hence calculating:
  *     (NOM << LSH) / DEN
  * This however means trouble for large NOM, because (NOM << LSH) may no
@@ -53,13 +57,9 @@
 /* HZ is the requested value. ACTHZ is actual HZ ("<< 8" is for accuracy) */
 #define ACTHZ (SH_DIV (CLOCK_TICK_RATE, LATCH, 8))
 
-#define ACTHZ_HPET (SH_DIV (HPET_TICK_RATE, LATCH_HPET, 8))
-
 /* TICK_NSEC is the time between ticks in nsec assuming real ACTHZ */
 #define TICK_NSEC (SH_DIV (1000000UL * 1000, ACTHZ, 8))
 
-#define TICK_NSEC_HPET (SH_DIV(1000000UL * 1000, ACTHZ_HPET, 8))
-
 /* TICK_USEC is the time between ticks in usec assuming fake USER_HZ */
 #define TICK_USEC ((1000000UL + USER_HZ/2) / USER_HZ)
 
@@ -115,6 +115,10 @@ static inline u64 get_jiffies_64(void)
 	 ((long)(a) - (long)(b) >= 0))
 #define time_before_eq(a,b)	time_after_eq(b,a)
 
+#define time_in_range(a,b,c) \
+	(time_after_eq(a,b) && \
+	 time_before_eq(a,c))
+
 /* Same as above, but does so with platform independent 64bit types.
  * These must be used when utilizing jiffies_64 (i.e. return value of
  * get_jiffies_64() */
@@ -150,11 +154,13 @@ static inline u64 get_jiffies_64(void)
  */
 #define MAX_JIFFY_OFFSET ((LONG_MAX >> 1)-1)
 
+extern unsigned long preset_lpj;
+
 /*
  * We want to do realistic conversions of time so we need to use the same
  * values the update wall clock code uses as the jiffies size.  This value
  * is: TICK_NSEC (which is defined in timex.h).  This
- * is a constant and is in nanoseconds.  We will used scaled math
+ * is a constant and is in nanoseconds.  We will use scaled math
  * with a set of scales defined here as SEC_JIFFIE_SC,  USEC_JIFFIE_SC and
  * NSEC_JIFFIE_SC.  Note that these defines contain nothing but
  * constants and so are computed at compile time.  SHIFT_HZ (computed in
@@ -198,7 +204,7 @@ static inline u64 get_jiffies_64(void)
  * operator if the result is a long long AND at least one of the
  * operands is cast to long long (usually just prior to the "*" so as
  * not to confuse it into thinking it really has a 64-bit operand,
- * which, buy the way, it can do, but it take more code and at least 2
+ * which, buy the way, it can do, but it takes more code and at least 2
  * mpys).
 
  * We also need to be aware that one second in nanoseconds is only a